ICD-10 Mapping Technical Guide

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If the meaning of the SNOMED CT concept is judged to be ambiguous by the Mapping Specialist, the concept will be managed as follows.

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Definition of ambiguity


Cases for concern or question of ambiguity in the SNOMED CT source concept definition will include:

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Case #1 constitutes fundamental ambiguity in the meaning of the SNOMED CT concept and cannot be mapped pending clarification. These concepts will be assigned a Map member with mapCategoryId of

Concept
ShowPartsid+term
t447640006 |Source SNOMED CT concept is ambiguous|
. The editorial notes field will be populated with any information on the map accrued by the Mapping Specialists during their research. The concept will be referred to the SNOMED CT editors and the Map Lead. Once the ambiguity is resolved, the map will be completed and mapCategoryId will be updated with the appropriate assignment.

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  • SNOMED CT
    Concept
    ShowPartsid+term
    t95531001 | Hemorrhagic duodenitis (disorder)|
    has  has a synonym synonym id+term
    Concept
    ShowParts
    t512170014 95531001 | multiple duodenal erosions|
    and  (Description.id: 512170014) and definition as a hemorrhagic inflammation of duodenal structure. The synonym implies ulceration and not hemorrhage and should likely be defined and classified as a type of duodenal ulcer.

    Concept
    ShowPartsid+term
    t95531001 | Hemorrhagic duodenitis(disorder) |

    maps

     maps to ICD10 classification K29.8, Duodenitis. Discrepancy with concept definition will cause the Mapping Specialist to report the

    concept

    concept 

    Concept
    ShowPartsid+term
    t95531001 | Hemorrhagic duodenitis (disorder) |

    as

     as confusing and in need of editorial review.

The context-free assumption will require agreement regarding procedures for the map when certain elements of mapping context are asserted in either the SNOMED CT source or the ICD10 target reference. These context issues, along with mappings to multiple target codes, are detailed in the following section. In all discussions, source always refers to the SNOMED CT concept and target refers to the ICD10 classification.